July 21, 2026 · Atar, Mauritania
Sunset in Atar today is at 19:35. Day length is 13h 12m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Atar's coordinates and updated daily.
Atar lies at 21°N. Near the tropics, day length stays close to 12 hours year-round, with only minor variation between seasons.
Sunset shifts later through spring and earlier through autumn — changing fastest near the equinoxes and slowest near the summer and winter solstices. See the year chart to visualise how sunset times shift month by month for Atar.
The longest day in Atar is around 13h 23m (around June 21). The shortest is around 10h 53m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 18:32 | 07:32 | 11h 1m |
| February | 18:51 | 07:24 | 11h 27m |
| March | 19:02 | 07:03 | 11h 59m |
| April | 19:11 | 06:35 | 12h 36m |
| May | 19:22 | 06:17 | 13h 5m |
| June | 19:34 | 06:12 | 13h 22m |
| July | 19:37 | 06:20 | 13h 16m |
| August | 19:24 | 06:32 | 12h 51m |
| September | 18:58 | 06:40 | 12h 18m |
| October | 18:30 | 06:47 | 11h 43m |
| November | 18:13 | 07:02 | 11h 11m |
| December | 18:15 | 07:21 | 10h 54m |